the former cia director david petraeus apologized for his ` mistakes ' as spoke outside the north carolina courthouse where he was sentenced to two years probation .
he was also fined $ 100,000 - more than double the $ 40,000 his attorneys had requested .
while petraeus had agreed two months ago to plead guilty to a misdemeanor count of unauthorized removal and retention of classified material , he formally entered his plea during thursday 's hearing .